| B | bit |
| B | Byte |
| B | Magnetic field |
| B | bold |
| B | Boron |
| B | Billion |
| b | Breadth |
| b | Barn |
| b | Molality |
| B | Susceptance |
| B-School | Business School |
| B2B | Business-To-Business |
| B2C | Business to Consumer |
| B2E | Business to Employee |
| B4U | Bollywood for You |
| BA | Bachelor of Arts |
| BA | British Airways |
| Ba | Barium |
| BA | Business Analyst |
| Bac | Baccalauréat |
| BAcc | Bachelor of Accountancy |
| BACC | Bangkok Art and Culture Centre |
| BACC | Bay Area Climate Collaborative |
| BACC | Blocco Automatico a Correnti Codificate |
| BACC | Broadcast Advertising Clearance Centre |
| BACC | Beijing Aerospace Command and Control Center |
| BACnet | Building Automation and Control Networks |
| BAE | Before Anyone Else |
| BAe | British Aerospace |
| BAE | Bureau of American Ethnology |
| BAE | Black Arrow Express |
| BAE | Barcelonnette – Saint-Pons Airport |
| bae | Barawana (Baré) |
| BAE | Barium Enema |
| BAFTA | British Academy of Film and Television Arts |
| Bajaj | from the surname of its founder, Jamnalal Bajaj |
| BALCO | Bharat Aluminium Company |
| BALCO | Bay Area Laboratory Co-Operative |
| BAMCEF | Backward and Minority Communities Employees’ Federation |
| BAMS | Bachelor of Ayurvedic Medicine and Surgery |
| BAMS | Broad Area Maritime Surveillance |
| BAR | Best Available Rate |
| Bar | Body of lawyers |
| BAR | Bachelor of Arts in Religion |
| BAR | Browning Automatic Rifle |
| BARC | Bhabha Atomic Research Centre |
| BARC | Barclays |
| BARC | Broadcast Audience Research Council |
| BARC | Beltsville Agricultural Research Center |
| BARC | Bangladesh Agricultural Research Council |
| BARC | British Automobile Racing Club |
| BARC | Bleeding Academic Research Consortium |
| BARC | Brooklyn Animal Resource Coalition |
| BARC | Bay Area Reference Center |
| BARC | Bradford Amateur Rowing Club |
| BARC | Barge, Amphibious Resupply, Cargo |
| BArch | Bachelor of Architecture |
| BASIC | Beginner's All-purpose Symbolic Instruction Code |
| BASIC | British American Security Information Council |
| BASIC | Background Affiliation Status Information Center |
| BASIC | Brothers and Sisters in Christ |
| BAU | Business As Usual |
| BAU | Beirut Arab University |
| BAU | Behavioral Analysis Unit |
| BAU | Bangladesh Agricultural University |
| BAU | Birsa Agricultural University |
| BAU | Bauru Airport |
| BBA | Bachelor of Business Administration |
| BBA | British Bankers Association |
| BBA | Baroda Bar Association |
| BBA | Boston Bar Association |
| BBA | Teniente Vidal Airport |
| BBB | Better Business Bureau |
| BBB | Blood–Brain Barrier |
| BBB | Beta Beta Beta |
| BBB | Big Brother Brasil |
| BBB | Baseball Bat |
| BBB | Banker’s Blanket Bond |
| bbb | Barai |
| BBB | Black Blood Brothers |
| BBB | BlackBerry Bold |
| BBB | Bed Bath & Beyond |
| BBB | Base Ball Bear |
| BBB | Bundle Branch Block |
| BBB | Before Breaking Bulk |
| BBB | Birmingham Black Barons |
| BBB | Bikes Blues and Barbecue |
| BBB | Bollywood Brass Band |
| BBB | Big Blue Bubble |
| BBB | Bad Boys Blue |
| BBB | Band Baaja Baaraat |
| BBB | Boston Baked Beans |
| BBB | Balintawak Beer Brewery |
| BBB | Burlington–Bristol Bridge |
| BBC | British Broadcasting Corporation |
| BBC | Brisbane Boys’ College |
| BBC | Bay City Municipal Airport |
| BBC | Baptist Bible College |
| BBC | Bluegrass Brewing Company |
| BBC | Brown, Boveri & Cie |
| BBC | B’nai Brith Canada |
| BBC | Baptist Bible College |
| BBC | Biwako Broadcasting co Ltd |
| BBCode | Bulletin Board Code |
| BBL | British Basketball League |
| bbl | Barrel |
| BBL | Basketball Bundesliga |
| BBL | Be Back Later |
| BBL | Baltic Basketball League |
| BBL | Big Bash League |
| BBL | Babolsar Airport |
| BBL | Balgzand Bacton Line |
| BBM | Bachelor of Business Management |
| BBM | BlackBerry Messenger |
| BBM | Bureau of Broadcast Measurement |
| BBM | Battambang Airport |
| BBM | Benjamin–Bona–Mahony |
| BBM | Bintang Bakti Masyarakat |
| BBMP | ಬೃಹತ್ ಬೆಂಗಳೂರು ಮಹಾನಗರ ಪಾಲಿಕೆ |
| bBMP | Bovine Bone Morphogenetic Protein |
| BBPS | Bharat Bill Payment System |
| BBPS | Bal Bharati Public School |
| BBPS | Broken Bow High School |
| BBQ | Barbecue |
| BBS | Bulletin Board System |
| BBS | Behavior-based Safety |
| BBS | Be Back Soon |
| BBS | Breeding Bird Survey |
| BBS | Bardet-Biedl Syndrome |
| BBS | Blackbushe Airport |
| BBS | Bhutan Broadcasting Service |
| BBS | Berger Blanc Suisse |
| BBS | Bachelor of Business Science |
| BBS | Babcock Borsig Service |
| BBS | Payment Central Banks |
| BBS | Baton Broadcast System |
| BBtu | Billion British thermal units |
| BC | Before Christ |
| BC | British Columbia |
| BC | Bullet Club |
| BC | British Council |
| BC | Brunswick Corporation |
| BC | Bakersfield College |
| BC | Baja California |
| BC | Benedictine College |
| BC | Bella Center |
| BC | Bergen Catholic |
| BCA | Building Code of Australia |
| BCA | Business Council of Australia |
| BCA | Boston Center for the Arts |
| BCA | Burst Cutting Area |
| BCA | Broadcast Agent |
| BCA | Billiard Congress of America |
| BCA | Bachelor of Computer Applications |
| BCA | Bank Central Asia |
| BCA | Berkshire College of Agriculture |
| Bcc | Blind Carbon Copy |
| BCC | Bitconnect |
| BCC | British Chambers of Commerce |
| BCC | Berkshire Community College |
| BCC | Banque Centrale des Comores |
| BCC | Banco Central de Cub |
| BCC | Banque Centrale du Congo |
| BCC | Bangkok Christian College |
| BCC | Barbados Community College |
| BCC | Bergen Community College |
| BCC | Berkeley City College |
| BCC | Baltimore City College |
| BCC | Barisal Cadet College |
| BCC | Ballarat Clarendon College |
| BCC | Bay City Central High School |
| BCC | Bee County College |
| BCC | Bacolod Christian Center |
| BCC | Barrie Central Collegiate |
| BCCI | Board of Control for Cricket in India |
| BCCI | Bank of Credit and Commerce International |
| BCCI | Bahrain Chamber of Commerce & Industry |
| BCCI | Bulgarian Chamber of Commerce and Industry |
| BCD | Binary-Coded Decimal |
| BCD | Boot Configuration Data |
| BCD | Bacolod-Silay Airport |
| BCD | Buoyancy Control Device |
| BCD | Baylor College of Dentistry |
| BCE | Before the Common Era |
| BCE | Bryce Canyon Airport |
| BCE | Bell Canada |
| BCEFCU | Baltimore County Employees Federal Credit Union |
| BCG | Boston Consulting Group |
| BCG | Bacillus Calmette-Guerin |
| BCG | Ballistocardiograph |
| BCG | Brightest Cluster Galaxy |
| BCIA | Beijing Capital International Airport |
| BCIA | Biofeedback Certification International Alliance |
| BCIA | British Construction Industry Awards |
| BCIA | British Columbia Institute of Agrologists |
| BCM | Billion Cubic Meters |
| BCM | Baylor College of Medicine |
| BCM | Body Control Module |
| BCM | Business Continuity Management |
| BCM | Baptist Collegiate Ministries |
| BCM | Black Consciousness Movement |
| BCM | British Chess Magazine |
| BCM | Bus Contracting Model |
| BCM | Body Cell Mass |
| BCM | Banque Centrale de Madagascar |
| BCM | Banque Centrale de Mauritanie |
| BCM | Bank Cubic Metre |
| BCM | George Enescu International Airport |
| BCM | Billion Cubic Microns |
| BCM | Boots Contract Manufacturing |
| BCM | Business Council of Mongolia |
| BCM | Bromochloromethane |
| BCM | Buffalo City Municipality |
| BCM | Banque Commerciale du Maroc |
| BCM | Bishop Choolaparambil Memorial |
| BCM | Bays Curry McCowen |
| BCM | Bangkok Can Manufacturing |
| BCN | Barcelona El Prat Airport |
| BCN | Birmingham Canal Navigations |
| BCom | Bachelor of Commerce |
| BCOM | British College of Osteopathic Medicine |
| BCS | British Computer Society |
| BCS | Bowl Championship Series |
| BCS | Body Condition Score |
| BCS | Bachelor of Computer Science |
| BCS | Bangladesh Civil Service |
| BCS | Southern Seaplane Airport |
| BCS | British Crime Survey |
| BCS | Budd-Chiari Syndrome |
| BCS | Biopharmaceutics Classification System |
| BCS | Barcode Scanner |
| BCS | Berean Christian School |
| BCS | Brentwood College School |
| BCS | Briarcrest Christian School |
| BCS | Brahm Consultancy Services |
| BCSBI | Banking Codes and Standards Board of India |
| BCSBI | Bay County Small Business Incubator |
| BDA | Battle Damage Assessment |
| BDA | Bangalore Development Authority |
| BDA | Bhubaneswar Development Authority |
| BDA | BIOS Data Area |
| BDA | British Dental Association |
| BDA | Blu-ray Disc Association |
| BDC | Business Development Company |
| BDC | Business Development Bank of Canada |
| BDC | Backup Domain Controller |
| BDD | Body Dysmorphic Disorder |
| BDD | Behavior-Driven Development |
| BDD | Domain Decomposition Method |
| BDD | Binary Decision Diagram |
| BDD | Business-Driven Development |
| BDD | Badu Island Airport |
| BDD | Business Desktop Deployment |
| BDD | Brachydactyly, type D |
| BDJS | Bharat Dharma Jana Sena |
| BDM | Business Development Manager |
| BDM | Births, Deaths & Marriages |
| BDM | Bund Deutscher Mädel |
| BDM | Badami |
| BDM | Background Debug Mode |
| BDM | 2,3-ButaneDione Monoxime |
| BDM | Bunker Defeat Munition |
| BDM | Bateson–Dobzhansky–Muller |
| BDM | Becker-DeGroot-Marschak |
| BDM | Banque de Développement du Mali |
| BDM | Black Dahlia Murder |
| BDM | Biodiversity Monitoring Switzerland |
| BDM | Business Decision Mapping |
| BDM | Browning Dual Mode |
| BDM | Braddock, Dunn & McDonald |
| BDM | Brian David-Marshall |
| BDM | Bueno de Mesquita |
| BDO | Big Day Out |
| BDO | Block Development Office |
| BDO | British Darts Organisation |
| BDO | 1,4-Butanediol |
| BDO | Bandung, Indonesia |
| BDR | Business Development Representative |
| BDR | Bund Deutscher Radfahrer |
| BDR | Backup Designated Router |
| BDR | Blonder Tongue Labs Inc. |
| Bdr | Bombardier |
| BDR | Bad Debts Reserve |
| BDR | Sikorsky Memorial Airport |
| BDR | Bilateral Digit Reduction |
| BDR | Bill Davis Racing |
| BDRip | BluRay Disk Rip |
| BDS | Bachelor Of Dental Surgery |
| BDS | Brindisi Airport |
| BDS | BeiDou Navigation Satellite System |
| BDS | Boeing Defense, Space & Security |
| BDS | Bergenske Dampskibsselskab |
| BDS | BioDetection Systems |
| BDS | British Dragonfly Society |
| BDS | Broadcast Data Systems |
| BDS | Bund der Steuerzahler |
| BDS | Bonde da Stronda |
| BDS | Black Dragon Society |
| BDS | Bund Demokratischer Sozialisten |
| BDS | Belgrano Day School |
| BE | Bachelor of Engineering |
| BE | Belgium |
| be | Belarusian |
| Be | Beryllium |
| Be | Beriev |
| BE | Flybe |
| BE | Bloco de Esquerda |
| BE | British English |
| be | Belgium (TLD) |
| BE | Business Engineering |
| BE | BearingPoint |
| BE | Business English |
| BE | Backup Exec |
| Be | Bejan number |
| BE | Badminton Europe |
| BE | British Eventing |
| BE | Black English |
| BEd | Bachelor of Education |
| BED | Binge Eating Disorder |
| BED | Biologically Effective Dose |
| BED | Hanscom Field |
| BEL | Bharat Electronics Limited |
| BEML | Bharat Earth Movers Limited |
| Benelux | Belgium, Netherlands, Luxembourg |
| BenQ | Bringing Enjoyment N Quality |
| Bentley | named after its founder, Walter Owen Bentley |
| BeO | Beryllium Oxide |
| BEO | Block Education Officer |
| BEO | Belmont Airport |
| BEREC | Body of European Regulators for Electronic Communications |
| BEREC | British Ever Ready Electrical Company |
| BEST | Board of European Students of Technology |
| BEST | Better Environmentally Sound Transportation |
| BEST | Brihanmumbai Electricity Supply |
| BETA | Bulletin of Experimental Treatments for AIDS |
| BETA | British Equestrian Trade Association |
| BF | Burkina Faso |
| BF | Best Friend/Boyfriend |
| BF | Blood Flow |
| BF | Behavioral Finance |
| bf | Burkina Faso (TLD) |
| BFF | Best Friends Forever |
| BFF | Scottsbluff Airport |
| BFF | Bangladesh Football Federation |
| BFF | British Forces Foundation |
| BFN | Bye For now |
| BFSI | Banking, Financial services and Insurance |
| BGA | Ball Grid Array |
| BGA | Palonegro International Airport |
| BGA | Battle Ground Academy |
| BGA | Behavior Genetics Association |
| BGA | British Gliding Association |
| BgA | Boys Generally Asian |
| BGA | Bagalia |
| BGA | British Go Association |
| BGA | British Geophysical Association |
| BGA | Break Glass Alarm |
| BGA | Boldklubberne Glostrup Albertslund |
| BGA | British-German Association |
| BGM | Background Music |
| BGM | Greater Binghamton Airport |
| BGM | Brace Gatarek Musiela |
| BGM | Boddington Gold Mine |
| BGM | Bell Globemedia |
| BHD | Bahraini Dinar |
| Bhd | Berhad (Limited) |
| BHD | Birt–Hogg–Dubé |
| BHD | George Best Belfast City Airport |
| BHD | Badli |
| BHD | Black Hawk Down |
| BHEL | Bharat Heavy Electricals Limited |
| BHFL | Birla Home Finance Limited |
| BHFL | Barrett Hussey Financial Limited |
| BHFL | Bedford Hills Free Library |
| BHIM | Bharat Interface for Money |
| BHIM | Bob Harman International Ministries |
| BHIM | Bank House Investment Management |
| BHK | Bedroom Hall Kitchen |
| BHK | Bukhara International Airport |
| BHK | Bachelor of Human Kinetics |
| BHK | Bush Hill Park railway station |
| BHM | Bachelor degree in Hotel Management |
| BHMS | Bachelor of Homoeopathic Medicine and Surgery |
| BHMS | Business & Hotel Management School |
| BHMS | Beverly Hills Montessori School |
| BHP | Brake HorsePower |
| BHP | Broken Hill Proprietary |
| BHP | Bandim Health Project |
| BHP | Business Honors Program |
| BHP | Boiler Horsepower |
| BHP | Botswana Harvard AIDS Institute Partnership |
| BHP | Browning Hi-Power |
| BHP | Beardmore-Halford-Pullinger |
| BHP | Bulletin d’Histoire Politique |
| BHP | Broadlands Hydropower Project |
| BHS | Bahamas |
| BHS | British Horse Society |
| BHS | Barbershop Harmony Society |
| BHS | Bathurst Airport |
| BHU | Baltimore Hebrew University |
| BHU | Banaras Hindu University |
| BHU | Bhavnagar Airport |
| BHW | Bell & Howell Company |
| Bi | Bismuth |
| BI | Bank Indonesia |
| BI | Business Intelligence |
| BI | Brain Injury |
| BI | Royal Brunei Airlines |
| Bi | Biot Number |
| BIDS | Biological Integrated Detection System |
| BIDS | Bangladesh Institute of Development Studies |
| BIDS | Usiness Intelligence Development Studio |
| BIEAP | Board of Intermediate Education Andhra Pradesh |
| BIEC | Bangalore International Exhibition Centre |
| BIEC | Bahrain International Exhibition Centre |
| BIEC | Bihar Intermediate Education Council |
| BIEC | Beverage Industry Environment Council |
| BIFMA | Business and Institutional Furniture Manufacturers Association |
| BIFR | Board of Industrial and Financial Reconstruction |
| BILT | Ballarpur Industries Limited |
| BIM | Building Information Modeling |
| BIMSTEC | Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation |
| BINAC | Binary Automatic Computer |
| Binance | Binary + Finance |
| Bing | Bing was ultimately chosen for the reason that it is easy to spell, one syllable, and easy to remember |
| BIOS | Basic Input/ Output System |
| BiPC | Biology, Physics, Chemistry |
| BIPC | Bohol Investment Promotion Center |
| BIPC | Big Island Press Club |
| BIPC | Bandar Imam Petrochemical Company |
| BIS | Bank for International Settlements |
| BIS | Bureau of Industry and Security |
| BIS | BlackBerry Internet Service |
| BIS | Bureau of Indian Standards |
| BIS | Bispectral index |
| BIS | Barratt Impulsiveness Scale |
| BIS | Back-Illuminated Sensor |
| BIS | Business Information Systems |
| BIS | Bloque Institucional Socialdemócrata |
| BiS | Best in Slot |
| BIS | Bachelor of Integrated Studies |
| BIS | Business, Innovation and Skills |
| bis | Bislama |
| BIS | Bismarck Municipal Airport |
| BIS | British Interplanetary Society |
| BIS | Bavarian International School |
| BIS | Benevolent Irish Society |
| BIS | British Ice Skating |
| BIS | Bachelor of Independent Studies |
| BIS | Bangladesh International School |
| BIS | Bordeaux International School |
| BIS | Brisbane Independent School |
| BIS | British Interlingua Society |
| BIS | Burlingame Intermediate School |
| bit | Binary digit |
| BIT | Bachelor of Information Technology |
| BIT | Beijing Institute of Technology |
| BIT | Bangalore Institute of Technology |
| BIT | Birla Institute of Technology |
| bitcoin | bit + coin |
| Bitmap | from the computer programming terminology, meaning a map of bits |
| BITSAT | Birla Institute of Technology and Science Aptitude Test |
| BJP | भारतीय जनता पार्टी |
| BJP | British Journal of Photography |
| BJP | British Journal of Psychiatry |
| BJP | Bence Jones Proteins |
| BJP | Arthur Siqueira State Airport |
| BJYM | भारतीय जनता युवा मोर्चा |
| BK | Burger King |
| BK | Brooklyn |
| BK | Bangkok |
| BK | the virus was named after the initials of the first patient |
| BK | Bankruptcy |
| Bk | Berkelium |
| BK | British Knights |
| BK | Big Potassium |
| BK | Ben Keen |
| BK | Banjo-Kazooie |
| BK | Bank of New York Mellon Corp |
| BK | Brother’s Keeper |
| BK | Brahma Kumaris |
| BK | Bundeskriminalamt |
| BK | Okay Airways |
| BK | Bakra Road Railway Station |
| BlackBerry | the name comes from the buttons on the device, which resembles a group of seeds |
| Blaupunkt | Blaupunkt in German means “ Blue dot ” |
| BLDC | Brushless Direct Current |
| BLDC | Butte Local Development Corporation |
| BLDC | Bermuda Land Development Company |
| Bldg | Building |
| bldg | Bill London Design Group |
| BlippAR | Blipp + Augmented Reality |
| BLO | Boston Lyric Opera |
| BLO | Back Loop Only |
| BLO | Booth Level Officer |
| BLO | Boiled Linseed Oil |
| BLO | Barbie Liberation Organization |
| BLO | Blonduos Airport |
| Blog | short for “Web log” |
| BLT | Bacon, Lettuce, and Tomato |
| BLT | Beautiful Lady & Television |
| BLT | Better Life Technology |
| BLT | Baselland Transport |
| BLT | Building Leadership Team |
| BLT | Blackwater Airport |
| BLT | Bridge Layer Tank |
| BLT | BHP Billiton |
| BLT | Bantuan Langsung Tunai |
| BLT | Berlian Laju Tanker |
| BLT | Bond Line Thickness |
| BLT | Barnstable Land Trust |
| BLT | Better Living for Texans |
| BLT | Better Link Tester |
| Blu-ray | name derived from the blue-violet laser used to read and write the disc |
| Bluetooth | from the epithet of the tenth-century king Harald “Bluetooth” |
| Blvd | Boulevard |
| BLVD | Battery Low Voltage Disconnect |
| BM | Bermuda |
| BM | Bachelor of Music |
| BM | Bachelor of Medicine |
| BMC | Brihanmumbai Municipal Corporation |
| BMC | Blue Mountain College |
| BMC | Bone Marrow Cells |
| BMC | British Mountaineering Council |
| BMC | British Motor Corporation |
| BMC | Boston Medical Center |
| BMC | Bulk Mail Center |
| BMC | Biomedical Chromatography |
| BMC | Blossom Music Center |
| BMC | Belfast Metropolitan College |
| BMC | Bangalore Medical College |
| BMC | Baseboard Management Controller |
| BMC | Bryan-Michael Cox |
| BMC | Brigham City Airport |
| BMCHSD | Bellmore-Merrick Central High School District |
| BMI | Body Mass Index |
| BMI | Broadcast Music, Inc. |
| BMI | Central Illinois Regional Airport |
| BMI | Business Monitor International |
| BMI | Bundesministerium des Innern |
| BMI | Brain-Machine Interface |
| BMI | Battelle Memorial Institute |
| BMI | Baltimore Museum of Industry |
| BMI | Bank Melli Iran |
| BMI | Birmingham and Midland Institute |
| BMI | Bureau of Military Information |
| BMI | Bicuculline |
| BMI | Big Mac Index |
| BMI | Bit Manipulation Instructions |
| BMI | British Malaysian Institute |
| BMI | Birmingham Medical Institute |
| BMI | British Midland International |
| BMI | Best Motoring International |
| BMP | BitMaP |
| BMP | Best Management Practices |
| BMP | Basic Metabolic Panel |
| BMP | Bone Morphogenetic Protein |
| BMS | Building Management System |
| BMS | Battle Management System |
| BMS | Bristol-Myers Squibb |
| BMS | Bachelor of Management Studies |
| BMS | Brumado Airport |
| BMS | Brooklawn Middle School |
| BMS | Burning Mouth Syndrome |
| BMTC | Bangalore Metropolitan Transport Corporation |
| BMTPC | Building Materials & Technology Promotion Council |
| BMW | Bayerische Motoren Werke |
| bmw | Bomwali |
| BMW | Bio-Medical Waste |
| BMW | Boy Meets World |
| BNC | British National Corpus |
| BNC | Bayonet Neill–Concelman |
| BNPM | Bank Note Paper Mill |
| BNYS | Bachelor of Naturopathy and Yogic Sciences |
| BOB | Bolivian Boliviano |
| BOB | Bank of Baroda |
| BOB | Best of the Best |
| BOB | Bora Bora Airport |
| BoB | Buy on Board |
| BOB | Berner Oberland Bahn |
| BOB | Bharat Overseas Bank |
| BODMAS | Brackets, Orders, Division, Multiplication, Addition, Subtraction |
| BOE | Board Of Education |
| BoE | Bank of England |
| BOE | Bill of Exchange |
| BOE | Boletín Oficial del Estado |
| BOE | Bill of Entry |
| BOE | Barrel of Oil Equivalent |
| BOE | Boundji Airport |
| BOED | Barrels of Oil Equivalent per Day |
| BOED | Business Organisation and Entrepreneurship Development |
| Boeing | named after its founder, William Edward Boeing |
| BOGO | Buy One Get One |
| BOI | Board of Investment |
| BoI | Bank of India |
| BOI | Boise Airport |
| BOI | Bank of Ireland |
| BoI | Bureau of Immigration |
| BOI | Boiron |
| BOI | Bank of Industry |
| BOI | Bay of Islands |
| BOI | Balkan Olympiad on Informatics |
| BOI | Blue Ocean Institute |
| BOI | Bainchi Railway Station |
| BOM | Bill of Materials |
| BOM | Chhatrapati Shivaji International Airport |
| BOM | Bureau of Meteorology |
| BOM | Bank of Mauritius |
| BOM | Bank of Maharashtra |
| BOM | Byte Order Mark |
| Bosch | named after its founder, Robert Bosch |
| Bose | named after its founder, Amar Gopal Bose |
| BOSS | Bharat Operating System Solutions |
| BOSS | Building Opportunities for Self-Sufficiency |
| BOSS | Boulder Outdoor Survival School |
| BOSS | Bosanska Stranka |
| BOSS | Bur Oak Secondary School |
| BOSS | Ballistic Optimizing Shooting System |
| BOSS | Body Orifice Security Scanner |
| BOSS | British Offshore Sailing School |
| BOSS | Balanced Optical SteadyShot |
| BOSS | South African Bureau for State Security |
| BOT | Robot |
| BOT | Build–operate–transfer |
| BOT | Bank of Thailand |
| BOT | Bank of Tanzania |
| BOT | Air Botswana |
| BOY | Bank of Yokohama |
| BP | Blood Pressure |
| BP | British Petroleum |
| BP | Base Pair |
| BP | Ballet Philippines |
| BP | British Pharmacopoeia |
| BP | Bullous Pemphigoid |
| BP | Bayernpartei |
| BP | Banco de Portugal |
| BP | Bharat Petroleum |
| BPA | Bisphenol A |
| BPA | Business Process Automation |
| BPA | Blue Panorama Airlines |
| BPA | Bonneville Power Administration |
| BPA | British Parking Association |
| BPA | Business Professionals of America |
| BPA | Bloodstain Pattern Analysis |
| BPA | Bangladesh Police Academy |
| BPA | Bradford Park Avenue |
| BPA | British Parachute Association |
| BPA | British Pipeline Agency |
| BPA | Busan Port Authority |
| BPA | Bachelor of Public Administration |
| BPA | Business Process Analysis |
| BPA | Boardgame Players Association |
| BPA | British Philosophical Association |
| BPA | British Pyrotechnists Association |
| BPA | Bureau of Pensions Advocates |
| BPA | Business and Professionals Alliance |
| BPC | Business Planning & Consolidation |
| BPC | Brewton–Parker College |
| BPC | Bible Presbyterian Church |
| BPC | Bipartisan Policy Center |
| BPC | Berklee Performance Center |
| BPC | British Poultry Council |
| BPC | Bournemouth & Poole College |
| BPC | Bangladesh Petroleum Corporation |
| BPC | Brown Printing Company |
| BPC | Bangladesh Parjatan Corporation |
| BPC | Bonnes Pratiques Cliniques |
| BPC | Border Protection Command |
| BPC | Bamenda Airport |
| BPC | Blood Pressure Cuff |
| BPC | British Pharmaceutical Codex |
| BPC | Black People’s Convention |
| BPC | Buckley Park College |
| BPCL | Bharat Petroleum Corporation Limited |
| BPCL | Bharat Pumps and Compressors Limited |
| BPDU | Bridge Protocol Data Unit |
| BPEd | Bachelor of Physical Education |
| BPEL | Business Process Execution Language |
| BPEL | Business Partnership for Early Learning |
| BPEL | Biological and Physiological Engineering Laboratory |
| BPharm | Bachelor of Pharmacy |
| BPL | Below Poverty Line |
| BPL | Bangladesh Premier League |
| BPL | Bangladesh Premier League |
| BPL | Bhopal Junction |
| BPL | Boston Public Library |
| BPL | Barclays Premier League |
| BPL | Birmingham Public Library |
| BPL | Brooklyn Public Library |
| BPL | Bio Products Laboratory |
| BPL | Bone Phosphate of Lime |
| BPL | Brisbane Premier League |
| BPL | Broadband over Power Line |
| BPL | Beta-Propiolactone |
| BPL | Burnaby Public Library |
| BPL | BioPollution Level |
| BPL | British Physical Laboratories |
| BPL | Bole Alashankou Airport |
| BPL | Bank Pool Loan |
| BPL | Bosicor Pakistan Limited |
| BPO | Business Process Outsourcing |
| BPR | Business Process Re-engineering |
| BPR | Berkeley Poetry Review |
| BPR | Borongan City Airport |
| BPS | Basis Points |
| bps | bits per second |
| BPS | British Psychological Society |
| BPS | Birla Public School |
| BPS | Porto Seguro Airport |
| BPS | Boston Public Schools |
| BPS | Buddhist Publication Society |
| BPS | Bangkok Patana School |
| BPS | Baltic Pipeline System |
| BPS | Blackfriars Priory School |
| BPS | Belilios Public School |
| BPS | Bellarmine Preparatory School |
| BPS | Bendemeer Primary School |
| BPSC | Bihar Public Service Commission |
| BPSC | Back Post Single Crochet |
| BPSC | Bangladesh Public Service Commission |
| BPSC | Balochistan Public Service Commission |
| BPSC | Business Process and Services Computing |
| BPSC | Book Publicists of Southern California |
| BPSC | Bear Paw Scout Camp |
| BPSC | Belated Payment Surcharge |
| BR | Best Regards |
| BRAC | Bangladesh Rural & Advancement Committee |
| BrahMos | Brahmaputra + Moskva |
| BRAVIA | Best Resolution Audio Visual Integrated Architecture |
| BRB | Be Right Back |
| BRB | Birmingham Royal Ballet |
| BRB | Benefits Review Board |
| BRB | Barreirinhas Airport |
| BRB | British Railways Board |
| BRB | Brienz Rothorn Bahn |
| BRBNMP | Bharatiya Reserve Bank Note Mudran Private Limited |
| Brexit | British exit |
| BRI | Belt and Road Initiative |
| BRI | Bank Rakyat Indonesia |
| BRI | Basic Rate Interface |
| BRI | Brigade de Recherche et d'Intervention |
| BRI | Bari Karol Wojtyła Airport |
| BRI | Biblical Research Institute |
| BRI | Bristol Royal Infirmary |
| BRI | Bradford Royal Infirmary |
| BRI | Biosecurity Research Institute |
| BRI | Brewers Retail Inc. |
| BRI | Breslov Research Institute |
| BRICS | Brazil, Russia, India, China and South Africa |
| BRICS | Basic Research in Computer Science |
| Bridgestone | named after its founder Shojiro Ishibashi, Ishibashi means “stone bridge” |
| Bro | Brother |
| BRO | Border Roads Organisation |
| BRO | Brownsville/South Padre Island International Airport |
| BRO | Basic Rights Oregon |
| BRTS | Bus Rapid Transit System |
| Brunch | Breakfast + Lunch |
| BS | Bachelor of Science |
| BS | Bahamas |
| BS | British Standards |
| bs | Bosnian |
| BS | Base Station |
| Bs | Bolivian Boliviano |
| BS | Bristol postcode area |
| BS | Bharat Stage |
| BS | Braunschweig |
| BS | British International Helicopters |
| bs | Bahamas (TLD) |
| BS | Bikram Samvat |
| Bs | Venezuelan Bolivar |
| BS | BioShock |
| BS | Brain stem |
| BS | Basel-Stadt |
| BS | Broadcasting Satellite |
| BS | BellSouth |
| BS | Bulletstorm |
| BS | Broken Sword |
| BS | Baker Street |
| BS II | Bharat Stage II |
| BS III | Bharat Stage III |
| BS IV | Bharat Stage IV |
| BS6 | Bharat Stage 6 |
| BSA | Business Software Alliance |
| BSA | Birmingham Small Arms Company |
| BSc | Bachelor of Science |
| BSC | Balanced ScoreCard |
| BSC | Barcelona Sporting Club |
| BSC | Barcelona Supercomputing Center |
| BSC | British Society of Cinematographers |
| BSC | Binary Symmetric Channel |
| BSC | Binary Synchronous Communication |
| BSC | Biological Safety Cabinet |
| BSC | Base Station Controller |
| BSC | Birmingham–Southern College |
| BSC | Bismarck State College |
| BSC | Bluefield State College |
| BSC | Berkeley Student Cooperative |
| BSC | Boston Scientific Corporation |
| BSC | Bird Studies Canada |
| BSC | British Security Coordination |
| BSC | Bristol Stool Chart |
| BSC | Biological Species Concept |
| BSC | Bordereau de Suivi de Cargaison |
| BSC | Berliner Sport-Club |
| BSC | The Baby-Sitters Club |
| BSC | Bridgewater State College |
| BSC | British Steel Corporation |
| BSC | Biological Stain Commission |
| BSC | Bright Star Catalog |
| BSC | British Standard Cycle |
| BSC | Big Sky Conference |
| BSC | Buffalo State College |
| BSC | Bryant & Stratton College |
| BSC | Basic Spacing between Centers |
| BSC | Black Stone Cherry |
| BSC | Bahrain Shareholding Company |
| BSC | Bentleigh Secondary College |
| BSC | Bohemian Sporting Club |
| BSC | Blood Stain Child |
| BSC | Bundesvision Song Contest |
| BSC | Broglio Space Center |
| BSD | Berkeley Software Distribution |
| BSE | Bombay Stock Exchange |
| BSE | Boston Stock Exchange |
| BSE | Bachelor of Software Engineering |
| BSE | Bahrain Stock Exchange |
| BSE | Breast self-examination |
| BSE | Budapest Stock Exchange |
| BSE | Beirut Stock Exchange |
| BSE | Bovine Spongiform Encephalopathy |
| BSE | Board of Secondary Education |
| BSEB | Bihar School Examination Board |
| BSEB | Bihar State Electricity Board |
| BSER | Board of Secondary Education |
| BSER | Brainstem Evoked Response |
| BSER | Best System of Emission Reduction |
| BSF | Border Security Force |
| BSF | British standard fine thread |
| BSF | Bible Study Fellowship |
| BSF | Bean Scripting Framework |
| BSF | Basilar Skull Fracture |
| BSF | Bibliothécaires Sans Frontières |
| BSI | British Standards Institution |
| BSI | Brain Science Institute |
| BSI | Botanical Survey of India |
| BSM | Business Service Management |
| BSM | Bronze Star Medal |
| BSM | Basic Security Module |
| BSM | Benilde-St. Margaret’s |
| BSM | Budapest Semesters in Mathematics |
| BSM | Bata Shoe Museum |
| BSM | Branch Service Manager |
| BSM | Bishe Kola Air Base |
| BSN | Bachelor of Science in Nursing |
| BSN | Body Sensor Networks |
| BSN | Bank Simpanan Nasional |
| BSNL | Bharat Sanchar Nigam Limited |
| BSOD | Blue Screen of Death |
| BSP | Board Support Package |
| BSP | Bangko Sentral ng Pilipinas |
| BSP | Bank South Pacific |
| BSP | Business Service Provider |
| BSP | Binary Space Partitioning |
| BSP | The Bahujan Samaj Party |
| BSP | Bulgarian Socialist Party |
| BSP | Bhilai Steel Plant |
| BSP | British Sea Power |
| BSP | Boy Scouts of the Philippines |
| BSRTC | Bihar State Road Transport Corporation |
| BSSID | Basic Service Set Identifier |
| BST | British Summer Time |
| BST | Binary Search Tree |
| BSTDC | Bihar State Tourism Development Corporation |
| BT | British Telecommunications |
| BTC | bitcoin |
| BTC | Basic Training Certificate |
| BTC | Bodoland Territorial Council |
| BTC | Balaghat Junction |
| BTC | Bit Test and Complement |
| BTC | British Transport Commission |
| BTC | Batticaloa Airport |
| BTC | Bahamas Telecommunications Company |
| BTC | Botswana Telecommunications Corporation |
| BTech | Bachelor of Technology |
| BTG | Behind The GIF |
| BTG | British Technology Group |
| BTG | Bishop Thomas Grant School |
| BTG | Bio-Technology General Ltd |
| BTG | Batangafo Airport |
| BTG | Beijing Tourism Group |
| BTM | Business Technology Management |
| BTM | Bert Mooney Airport |
| BTM | Big Thunder Mountain |
| BtMG | Betäubungsmittelgesetz |
| BTMG | Bulk Tank Milk Grader |
| BTS | BangTan Sonyeondan / Beyond The Scene |
| BTS | Base Transceiver Station |
| BTS | Brevet de Technicien Supérieur |
| BTS | British Thoracic Society |
| BTS | British Transplantation Society |
| BTS | Bureau of Transportation Statistics |
| BTS | Bratislava Airport |
| BTS | Bug Tracking System |
| BTS | Breaking The Silence |
| BTS | Breaking the Silence |
| BTS | British Toxicology Society |
| BTS | British Tunnelling Society |
| BTS | Build-To-Stock |
| BTS | Branch Trace Store |
| BTS | Bandar Tasik Selatan |
| BTS | Bangkok Mass Transit System |
| bts | Batak Simalungun |
| BTS | Blalock–Taussig Shunt |
| BtS | Biotechnologische Studenteninitiative |
| BTS | Berlin Graduate School for Transnational Studies |
| BtS | Beyond the Supernatural |
| BTS | Baptist Theological Seminary |
| BTS | Broadcast Television Systems |
| BTS | Bangor Theological Seminary |
| BTTS | Both Teams To Score |
| BTTS | Buddhist Text Translation Society |
| BTTS | Bristol Tennessee Transit System |
| Btu | British thermal unit |
| BTU | Peabody Energy Corporation |
| BTU | Bintulu Airport |
| BTU | Brandenburgische Technische Universität |
| BTU | Bursa Technical University |
| BTU | Boston Teachers Union |
| BTU | Benzylthiouracil |
| BTU | Broward Teachers Union |
| BTU | Bathurst Trade Union |
| BTW | By the Way |
| BTW | Batu Licin Airport |
| Bugatti | named after its founder, Ettore Bugatti |
| Buick | from the name of its founder, David Dunbar Buick |
| Bull | Named after its founder, Fredrik Rosing Bull |
| Bultaco | From the name of its founder, Paco Bultó. |
| BUMS | Bachelor of Unani Medicine and Surgery |
| BUMS | Bath University Maths Society |
| BUMS | Bristol University Music Society |
| BUMS | Brandon University Music Students |
| BVG | Berliner Verkehrsbetriebe |
| BVG | Berlevag Airport |
| BVG | Best Value Guarantee |
| BVG | Bharat Vikas Group |
| BVSc | Bachelor of Veterinary Science |
| BWSL | Bandra–Worli Sea Link |
| BWSL | Boo Williams Summer League |
| BWSSB | Bangalore Water Supply and Sewerage Board |
| BYD | Build Your Dreams |
| BYD | Barley Yellow Dwarf |
| BYD | Barry Docks |
| BYD | Bury Your Dead |
| BYD | Beidah Airport |
| BYOD | Bring Your Own Device |
| BYOP | Bring Your Own Phone |
| BYOP | Be Your Own Pet |
